Not really. Darwin Award nominees have to have done something really stupid to initiate their death or as they say "by eliminating themselves in an extraordinarily idiotic manner." This was just a case of an ordinary accident. People get electrocuted all the time, often from things like hairdryers falling into the bathtub with them or touching a overhead power line with a metal ladder. Same here. Accidently touching a powered microphone while standing in water is not "extraordinarily idiotic."

This, on the other hand is a typical example of "extraordinarily idiotic."